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The Collapse of the Wien Tail in the Coldest Brown Dwarf? Hubble Space Telescope Near-Infrared Photometry of WISE J085510.83-071442.5

Schneider, Adam C. and Cushing, Michael C. and Kirkpatrick, J. Davy and Gelino, Christopher R. (2016) The Collapse of the Wien Tail in the Coldest Brown Dwarf? Hubble Space Telescope Near-Infrared Photometry of WISE J085510.83-071442.5. Astrophysical Journal Letters, 823 (2). Art. No. L35. ISSN 2041-8205. https://resolver.caltech.edu/CaltechAUTHORS:20160624-090006588

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Abstract

We present Hubble Space Telescope (HST) near-infrared photometry of the coldest known brown dwarf, WISE J085510.83−071442.5 (WISE 0855−0714). WISE 0855−0714 was observed with the Wide Field Camera 3 (WFC3) on board HST using the F105W, F125W, and F160W filters, which approximate the Y, J, and H near-infrared bands. WISE 0855−0714 is undetected at F105W with a corresponding 2σ magnitude limit of ~26.9. We marginally detect WISE 0855−0714 in the F125W images (S/N ~ 4), with a measured magnitude of 26.41 ± 0.27, more than a magnitude fainter than the J-band magnitude reported by Faherty et al. WISE J0855−0714 is clearly detected in the F160W band, with a magnitude of 23.86 ± 0.03, the first secure detection of WISE 0855−0714 in the near-infrared. Based on these data, we find that WISE 0855−0714 has extremely red F 105W - F125W and F125W - F160W colors relative to other known Y dwarfs. We find that when compared to the models of Saumon et al. and Morley et al., the F105W -F125W and F125W - F160W colors of WISE 0855−0714 cannot be accounted for simultaneously. These colors likely indicate that we are seeing the collapse of flux on the Wien tail for this extremely cold object.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.3847/2041-8205/823/2/L35DOIArticle
http://iopscience.iop.org/article/10.3847/2041-8205/823/2/L35PublisherArticle
http://arxiv.org/abs/1605.05618arXivDiscussion Paper
ORCID:
AuthorORCID
Schneider, Adam C.0000-0002-6294-5937
Cushing, Michael C.0000-0001-7780-3352
Kirkpatrick, J. Davy0000-0003-4269-260X
Additional Information:© 2016 The American Astronomical Society. Received 2016 May 4; revised 2016 May 17; accepted 2016 May 18; published 2016 May 27. We thank the anonymous referee whose comments improved the clarity of this paper. We thank Mark Marley, Didier Saumon, and Caroline Morley for fruitful discussions and for graciously making their models publicly available online. This work is based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with program #14233. Support for program #14233 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology. This research has benefitted from the SpeX Prism Spectral Libraries, maintained by Adam Burgasser at http://pono.ucsd.edu/~adam/browndwarfs/spexprism.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASANAS 5-26555
Space Telescope Science Institute14233
Subject Keywords:brown dwarfs
Issue or Number:2
Record Number:CaltechAUTHORS:20160624-090006588
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160624-090006588
Official Citation:Adam C. Schneider et al 2016 ApJ 823 L35
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:68651
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:24 Jun 2016 17:14
Last Modified:09 Mar 2020 13:19

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